Cladosporium sphaerospermum as a new plant growth-promoting endophyte from the roots of Glycine max (L.) Merr

Endophytic fungi are plant symbionts that produce a variety of beneficial metabolites for plant growth and protection against herbivory and pathogens. Fourteen fungal samples were isolated from the roots of soybean cultivar Daemangkong and screened on waito-c rice for their plant growth-promoting ca...

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Bibliographic Details
Published in:World journal of microbiology & biotechnology 2009-04, Vol.25 (4), p.627-632
Main Authors: Hamayun, Muhammad, Afzal Khan, Sumera, Ahmad, Nadeem, Tang, Dong-Sheng, Kang, Sang-Mo, Na, Chae-In, Sohn, Eun-Young, Hwang, Young-Hyun, Shin, Dong-Hyun, Lee, Byung-Hyun, Kim, Jong-Guk, Lee, In-Jung
Format: Article
Language:English
Subjects:
Applied Microbiology
Bioassays
Biochemistry
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
Cladosporium
Cladosporium sphaerospermum
Environmental Engineering/Biotechnology
Fundamental and applied biological sciences. Psychology
Fungi
Gibberella fujikuroi
Glycine max
Life Sciences
Microbiology
Original Paper
Oryza sativa
Plant biology
Plant growth
Seeds
Soybeans
Studies
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Summary:Endophytic fungi are plant symbionts that produce a variety of beneficial metabolites for plant growth and protection against herbivory and pathogens. Fourteen fungal samples were isolated from the roots of soybean cultivar Daemangkong and screened on waito-c rice for their plant growth-promoting capacity. Twelve of the fungal isolates promoted plant growth, while two inhibited it. The fungal isolate DK-1-1 induced maximum plant growth in both waito-c rice and soybean. The plant growth promotion capacity of DK-1-1 was higher than the wild type Gibberella fujikuroi. Gibberellin (GA) analysis of culture filtrate of DK-1-1 showed the presence of higher amounts of bioactive GA₃, GA₄, and GA₇ (6.62, 2.1 and 1.26 ng/mL, respectively) along with physiologically inactive GA₅, GA₁₅, GA₁₉, and GA₂₄. Phylogenetic analysis of 18S rDNA sequence identified the fungal isolate as a new strain of Cladosporium sphaerospermum. Gibberellin production and plant growth-promoting ability of genus Cladosporium are reported for the first time in the present study.
ISSN:0959-3993
1573-0972
DOI:10.1007/s11274-009-9982-9